Search Results - "Ravna, E."

Geothermobarometry of UHP and HP eclogites and schists - an evaluation of equilibria among garnet-clinopyroxene-kyanite-phengite-coesite/quartz by Krogh Ravna, E. J., Terry, M. P.

“…Geothermometry of eclogites and other high pressure (HP)/ultrahigh‐pressure (UHP) rocks has been a challenge, due to severe problems related to the reliability…”
Get full text

Discovery of diamond in the Tromsø Nappe, Scandinavian Caledonides (N. Norway) by Janák, M., Krogh Ravna, E. J., Kullerud, K., Yoshida, K., Milovský, R., Hirajima, T.

“…We report the first finding of diamond in crustal rocks from the Tromsø Nappe of the North Norwegian Caledonides. Diamond occurs in situ as inclusions in…”
Get full text

Constraining peak P-T conditions in UHP eclogites: calculated phase equilibria in kyanite- and phengite-bearing eclogite of the Tromsø Nappe, Norway by JANÁK, M., RAVNA, E. J. K., KULLERUD, K.

“…Kyanite‐ and phengite‐bearing eclogites have better potential to constrain the peak metamorphic P–T conditions from phase equilibria between garnet + omphacite…”
Get full text

Cold subduction and the formation of lawsonite eclogite - constraints from prograde evolution of eclogitized pillow lava from Corsica by RAVNA, E. J. K., ANDERSEN, T. B., JOLIVET, L., De CAPITANI, C.

“…A new discovery of lawsonite eclogite is presented from the Lancône glaucophanites within the Schistes Lustrés nappe at Défilé du Lancône in Alpine Corsica…”
Get full text

SHRIMP zircon chronology of HP-UHP rocks of the Makbal metamorphic complex in the Northern Tien Shan, Kyrgyzstan by Konopelko, D., Kullerud, K., Apayarov, F., Sakiev, K., Baruleva, O., Ravna, E., Lepekhina, E.

“…In this paper we present the first results of sensitive high-resolution ion microprobe (SHRIMP) U–Pb zircon dating obtained for the ultra-high pressure (UHP)…”
Get full text

Ultrahigh-pressure metamorphism and exhumation of garnet peridotite in Pohorje, Eastern Alps by JANÁK, M., FROITZHEIM, N., VRABEC, M., KROGH RAVNA, E. J., De HOOG, J. C. M.

“…New evidence for ultrahigh‐pressure metamorphism (UHPM) in the Eastern Alps is reported from garnet‐bearing ultramafic rocks from the Pohorje Mountains in…”
Get full text

A Late Ordovician U-Pb age for the Tromso Nappe eclogites, Uppermost Allochthon of the Scandinavian Caledonides by Corfu, F, Ravna, E J K, Kullerud, K

“…The Scandinavian Caledonides contain the record of several high-pressure events reflecting distinct episodes of collision and subduction in the course of the…”
Get full text

Behavior of the northwestern part of the Fennoscandian Ice Sheet during the Last Glacial Maximum – a response to external forcing by Rørvik, K.-L., Laberg, J.S., Hald, M., Ravna, E.K., Vorren, T.O.

“…A sediment core from the Lofoten Contourite Drift on the continental slope off Northern Norway, proximal to the former Vestfjorden–Trænadjupet Ice Stream,…”
Get full text

Prograde garnet-bearing ultramafic rocks from the Tromsø Nappe, northern Scandinavian Caledonides by Ravna, Erling J.K., Kullerud, Kåre, Ellingsen, Edel

“…Garnet-bearing peridotitic rocks closely associated with eclogite within the Tromsø Nappe of the northern Scandinavian Caledonides show good evidence for…”
Get full text

Eclogites and eclogites in the Western Gneiss Region, Norwegian Caledonides by Cuthbert, S.J, Carswell, D.A, Krogh-Ravna, E.J, Wain, A

“…The Western Gneiss Region (WGR) marks the outcrop of a composite terrane consisting of variably re-worked Proterozoic basement and parautochthonous or…”
Get full text

A Late Ordovician U?Pb age for the Troms? Nappe eclogites, Uppermost Allochthon of the Scandinavian Caledonides by Corfu, F., Ravna, E. J. K., Kullerud, K.

Get full text

Metamorphic Evolution of the Tønsvika Eclogite, Tromsø Nappe-Evidence for a New UHPM Province in the Scandinavian Caledonides by Ravna, E. J. Krogh, Roux, M. R.M.

“…Eclogites within the Tromsø Nappe of the Uppermost Allochthon in the Scandinavian Caledonides record a complex P-T history, involving a prograde…”
Get full text

The garnet-clinopyroxene Fe2+-Mg geothermometer: an updated calibration by Krogh Ravna

“…Multiple regression analysis on an extended dataset has been performed to refine the relationship between temperature, pressure, composition and the Fe–Mg…”
Get full text

Metamorphic Evolution of the T⊘nsvika Eclogite, Troms⊘ Nappe—Evidence for a New UHPM Province in the Scandinavian Caledonides by Ravna, E. J. Krogh, Roux, M. R.M.

Get full text

Unique accessory Ti-Ba-P mineralization in the Kvalöya ultrapotassic dike, Northern Norway by Zozulya, D. R., Savchenko, E. E., Kullerud, K., Ravna, E. K., Lyalina, L. M.

“…Unusual ultrapotassic dikes were recently found on the Kvalöya Island in Northern Norway. The dikes crosscutting granites 1.8 Ga in age are 0.1–1.0 m thick and…”
Get full text

Distribution of Fe2+ and Mg between coexisting garnet and hornblende in synthetic and natural systems: an empirical calibration of the garnet–hornblende Fe–Mg geothermometer by Ravna, Erling Krogh

Get full text

Anticlockwise metamorphic pressure–temperature paths and nappe stacking in the Reisa Nappe Complex in the Scandinavian Caledonides, northern Norway: evidence for weakening of lower continental crust before and during continental collision by Faber, Carly, Stunitz, Holger, Gasser, Deta, Jerabek, Petr, Kraus, Katrin, Corfu, Fernando, Ravna, Erling K, Konopasek, Jiri

“…This study investigates the tectonostratigraphy and metamorphic and tectonic evolution of the Caledonian Reisa Nappe Complex (RNC; from bottom to top: Vaddas,…”
Get full text

Ultrahigh-Pressure Metamorphism in the Western Gneiss Region of the Norwegian Caledonides by Carswell, D. A., Cuthbert, S. J., Krogh Ravna, E. J.

“…The distribution and characterization of UHP rocks within the Western Gneiss Region (WGR) of the Norwegian Caledonides is reviewed. While recent studies have…”
Get full text